Từ vựng tiếng Anh theo chủ đề

Comprehensive English Vocabulary Word Lists

http://www.manythings.org/vocabulary

You can browse these lists in categories or you can use the Find function of your web browser to jump directly to the list you are looking for.

Since some of these lists are quite detailed, they may not be good for some of the games.
If you are just interested in quickly playing a few games, perhaps you should start with the ESL / EFL Basic Vocabulary Word Lists.